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DPT260
5.1 - TESTS BEFORE INSTALLATION
5.2 - SOIL PERMEABILITY
Premise
The bollards and the related pits are usually shipped already assembled.
Bollards, control unit and eventual accessories are usually packed on Europallet.
The use of a fork lifter or similar is recommended for pallets movement..
Subsoil check
Before proceeding with the installation of the pits, ensure that the laying point of the bollards respects the following
characteristics:
1.
Absence of aquifer in the subsoil.
2.
Absence of pipes or elettrical cables.
3.
Presence of an efficient earthing system.
In case bollards are laid on an inclined area, it is necessary to install, before the bollards and in the immediate
surroundings, a drainage channel complete with covering grid (to avoid rainwater infilitrations in the pits due to
incline).
An important factor in the installation of bollards, prior to the assessment of the permeability of soil in relation to the
drainage of rainwater, is that it should determine in advance whether the permeability of the ground covered by the
installation is within acceptable parameters.
To confirm the practise of soil permeability, it is recommended that before the installation, the excavation is
carried out at about 40 litres of water per m2, and ensuring that it flows into the ground at about 30 minutes.
If the result should be negative, build a water drainage system by using a 50mm pipe connected to the sewer system.
As an alternative, connect the pipe to a “pit for rainwater collection” placed at a greater depth than the bollard pit,
equipped with an immersion pump and a float for the automatic operation command.
UK
